The sulfur content in diesel after hydrogenation is too high
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The imported crude oil that arrives at our plant currently has a very high sulfur content, reaching 6000+ ppm. Here, diesel hydrotreatment is carried out using both Chaiji and Changchi catalysts; the sulfur content with the Chaiji catalyst is around 3500 ppm, while it’s about 1400 ppm with the Changchi catalyst. At a reaction temperature of 325 degrees Celsius, it’s possible to achieve National IV standards, but the processing volume is very low. I’ve come up with a plan to increase the processing volume and keep the sulfur content around 200 ppm, followed by a second round of hydrotreatment. Could this method help remove the sulfur? It’s just an idea; I’d appreciate some guidance from those with more experience
The best solution: replace the catalyst; our raw materials are similar to yours
Sure, but it’s not cost-effective. Replace the filter; it’s better to add an additional secondary filter as well, so that you can go abroad directly